Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
  • B23B31/02—Chucks
  • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
  • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
  • B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
  • B23B31/201—Characterized by features relating primarily to remote control of the gripping means
  • B23B31/202—Details of the jaws
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
  • B23B31/02—Chucks
  • B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
  • B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
  • B23B31/305—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck the gripping means is a deformable sleeve
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
  • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
  • B23Q1/0009—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts
  • B23Q1/0018—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
  • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
  • B23Q1/0009—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts
  • B23Q1/0018—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means
  • B23Q1/0027—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means between moving parts between which an uninterrupted energy-transfer connection is maintained
  • B23Q1/0036—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means between moving parts between which an uninterrupted energy-transfer connection is maintained one of those parts being a tool
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
  • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
  • B23Q11/10—Arrangements for cooling or lubricating tools or work
  • B23Q11/1015—Arrangements for cooling or lubricating tools or work by supplying a cutting liquid through the spindle
  • B23Q11/1023—Tool holders, or tools in general specially adapted for receiving the cutting liquid from the spindle
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
  • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
  • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
  • B23Q3/06—Work-clamping means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
  • B23B2231/20—Collet chucks
  • B23B2231/201—Operating surfaces of collets, i.e. the surface of the collet acted on by the operating means
  • B23B2231/2021—Operating surfaces of collets, i.e. the surface of the collet acted on by the operating means comprising two different cones
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
  • B23B2231/20—Collet chucks
  • B23B2231/2089—Slits of collets
  • B23B2231/2091—Slits of collets extending from both axial ends of the collet
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23B—TURNING; BORING
  • B23B2250/00—Compensating adverse effects during turning, boring or drilling
  • B23B2250/12—Cooling and lubrication
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T279/00—Chucks or sockets
  • Y10T279/17—Socket type
  • Y10T279/17111—Fluid-conduit drill holding
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T279/00—Chucks or sockets
  • Y10T279/17—Socket type
  • Y10T279/17411—Spring biased jaws
  • Y10T279/17418—Unitary
  • Y10T279/17435—Split at both ends
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T279/00—Chucks or sockets
  • Y10T279/17—Socket type
  • Y10T279/17411—Spring biased jaws
  • Y10T279/17478—Spring biased jaws with means to exclude contaminants; e.g., seal, shield
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T408/00—Cutting by use of rotating axially moving tool
  • Y10T408/34—Combined cutting means
  • Y10T408/352—Combined cutting means including rotating cutter other than rotating, axially moving Tool
  • Y10T408/353—Crystalline cutter
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T408/00—Cutting by use of rotating axially moving tool
  • Y10T408/44—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T408/00—Cutting by use of rotating axially moving tool
  • Y10T408/44—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product
  • Y10T408/45—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product including Tool with duct

Definitions

• the invention relates to a clamping device between a tool shank and a machine tool.
• the invention relates to a clamping device for cutting tools with an internal coolant supply.
• Cutting tools are used, which feed the coolant directly to the cutting edge through a hole in the tool shank in order to give the tool a longer service life and better cutting performance.
• Such cutting tools usually have a round shaft, which resp.
• Clamping sleeve which has slots for flexibility, is clamped in the tool holder and is thus secured against twisting. Since these cutting tools with internal coolant supply are exposed to speeds of 40,000 rpm without further ado, increased cooling of the work process becomes indispensable. To improve the cooling, the pressure at which the coolant is injected is therefore increased to up to 50 bar or more. If a tool with internal coolant supply using a collet or. Clamping sleeve is connected to the machine tool, a large part of the coolant goes through the slots of the unsealed collet, respectively. Adapter sleeve lost.
• a collet or Clamping sleeve provided, the non-milled positions of the radially arranged slots, respectively.
• Intermediate slots on the one hand on the tool shank and on the other hand at least partially on the collet or Collet receptacles are fixed in such a way that they form a coolant lock together with the tool shank and the collet receptacle.
• Clamping sleeve or by axial pressure using a clamping nut in a conical collet gives coolant-tight metal-metal seals between the tool shank, collet or. Collet and collet or.
• Adapter sleeve holder so that the pressurized coolant can only escape in the direction of the tool through the bore provided in the tool shank.
• the formation of open slots on the machine side can be avoided by using intermediate slots closed on both sides.
• the coolant can only escape in the direction of the cutting tool via the bore provided in the tool shank as intended.
• Double-slotted collets are preferably used, which are distinguished by the fact that the slots are alternately milled into the collets from the opposite sides, but collets with intermediate slots, i.e. with slots, respectively on both ends of the collet.
• Clamping sleeve are closed, can be used.
• the clamping sleeve then advantageously has only open slots on the cutting tool side, so that there are no more sealing problems on the machine side due to the lack of open slots. To the flexibility of such collets resp. To improve clamping sleeves, they can advantageously also have an emptying.
• Adapter sleeves are usually made of hardened spring steel, tool steel or beryllium bronze, so that the radially milled slots give them a certain flexibility when using mechanical or hydraulic pressure. They can be cylindrical, conical, double-conical or combined conical / cylindrical.
• Adapter sleeves can have a bore at the machine end if the tool shank has a small diameter, whereas this is usually not necessary for tool shanks of larger diameter.
• Show it 1 shows a section through a clamping device with a conical collet without drilling
• FIG. 2 shows a section through a clamping device with a conical collet and with a bore
• FIG. 3 shows a section through a clamping device with a cylindrical clamping sleeve with hydraulic clamping
• FIG. 4a shows a perspective side view of a cylindrical adapter sleeve
• FIG. 4b shows a perspective view from the front of the cylindrical clamping sleeve from FIG.
• 5a shows a perspective side view of a collet collet
• FIG. 5b shows a perspective view from the front of the collet chuck of FIG. 5a.
• FIG. 1 shows a clamping device (1) which has a conical collet (2).
• the collet (2) is fixed in the collet holder (4) by means of the clamping nut (3).
• the clamping nut (3) When the clamping nut (3) is fixed, it is increasingly pressed into the tapered collet holder (4), which exerts an axial pressure on the tool shank (5), so that it in turn is firmly fixed in the collet holder (4).
• the tool shank (5) has a bore (6) for the internal coolant supply.
• the functionally required flexibility of the collet (2) is achieved through radial slots (7,8) in the collet (2). Part of the slots (7) is machined on the machine side and another part of the slots (8) is milled into the collet (3) on the cutting tool side.
• slots are preferably made in such a way that the best possible flexibility is achieved the greatest possible clamping force can be transmitted to the tool sheep (5).
• the slots (7) milled into the collet (2) on the machine side have a certain length. This is determined by the length of the collet holder (4), the positions (11) not milled through together with the tool shank (5) and the collet holder (4) acting as a barrier for the coolant (10) to exit the tensioning device (1) act. Since the slots (8) milled on the tool side in the collet (2) also have positions (9) which are not milled through and which form an analogous lock against the coolant (10), the coolant can only pass through its bore (3) Escape location to the cutting tool.
• the slot labyrinth is locked in such a way that there is no longer a free and coherent exit for the coolant (10), which allows the coolant (10) to emerge unhindered through the slots (7.8) would allow.
• Fig. 2 shows a similar clamping device as that shown in Fig. 1.
• the main difference is the additional arrangement of a bore (12), which is used in particular in collets that are suitable for tool shanks (5) with a small diameter.
• the position (9) that has not been milled through is also greatly enlarged, so that this position can be fixed in a sealing manner on the tool shank in order to prevent the coolant from escaping.
• FIG 3 a clamping sleeve (13) is shown, which is hydraulically clamped.
• the clamping sleeve (13) has on the one hand slots (8) milled on the cutting tool side and, on the other hand, intermediate slots (14), each of which has a non-milled position (15a) and (15b) at both ends.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Gripping On Spindles (AREA)
• Auxiliary Devices For Machine Tools (AREA)
• Feeding Of Workpieces (AREA)

Applications Claiming Priority (4)

Publications (2)

Family

ID=4240935

Family Applications (1)

Country Status (10)

Families Citing this family (54)

Family Cites Families (7)

• 1994
  • 1994-09-13 WO PCT/CH1994/000180 patent/WO1995007791A1/fr not_active Ceased
  • 1994-09-13 DE DE59408966T patent/DE59408966D1/de not_active Expired - Lifetime
  • 1994-09-13 AT AT94925326T patent/ATE187113T1/de not_active IP Right Cessation
  • 1994-09-13 EP EP94925326A patent/EP0668810B1/fr not_active Expired - Lifetime
  • 1994-09-13 KR KR1019950701867A patent/KR950704085A/ko not_active Ceased
  • 1994-09-13 ES ES94925326T patent/ES2141834T3/es not_active Expired - Lifetime
  • 1994-09-13 US US08/433,488 patent/US5904451A/en not_active Ceased
  • 1994-09-13 AU AU75294/94A patent/AU7529494A/en not_active Abandoned
  • 1994-09-13 JP JP7508890A patent/JPH08503170A/ja active Pending
  • 1994-09-13 CN CN94190786A patent/CN1115566A/zh active Pending
  • 1994-09-13 US US09/422,112 patent/USRE37484E1/en not_active Expired - Lifetime

Non-Patent Citations (1)

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